JPS5815426B2 - Traverse device in glass fiber winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a traversing device in a glass fiber winding device.

As shown in FIGS. 1 and 2, conventional winding of glass fibers involves sizing several hundred glass filaments 2 pulled out from a bushing 1 with a binder using a coating device 3 while being pulled by the tension generated by the winding. A plurality of strands 5 (four in the drawing) are collected by a dividing shoe 4 and wound around a winding tube 8 fitted to a winding drum 7 that rotates at high speed while being traversed by a traversing device 6, and packaged into a package 9. form.

As shown in FIGS. 3 and 4, the traversing device 6 has a wire 11° formed in a spiral shape with a winding angle of about 180° around a traverse shaft 10 and a radius gradually decreasing from the traverse shaft 10. 12 is attached, 2
The wires 11 and 12 have the same shape and have a unique phase difference of 18'0 degrees with respect to the traverse shaft 10.
They are arranged on both sides with respect to a plane containing the axis of the traverse shaft 10.

Therefore, the directions in which the radius of the two wires decreases and the mounting positions are completely opposite to each other.

In the above winding method, the strand is restrained and reciprocated by a traversing device.

This reciprocating movement of the strands moves the strands along the slope from the long leg of one wire to the short leg as the pair of wires rotates, and then from the short leg of the distal end of the strand to the short leg of the other wire. After the transfer, the strand is repeatedly moved from the long leg of the other wire to the short leg along its inclination in the opposite direction to the first.

During this transition from the short leg of one wire to the long leg of the other wire, the leading strand of the strands that had progressed along the slope of the wire until then migrated to the other wire. Since the other strand moving in parallel is still traveling and is restrained by one of the wires in front, it has already moved to the other wire and the remaining strand collides with the strand that has started moving back in the opposite direction, resulting in a contact strand. Ru.

When this contact occurs, the contacting strands are bonded together due to the adhesive effect of the binder attached to the strands.

Thus, during this transition period, all strands normally travel on the previous wire, until all strands that have been traveling on the previous wire transfer to the other wire and all strands begin traveling in the opposite direction.
Combine into a book.

Incidentally, the bonded portions between the strands are completely integrated in the next drying step.

Adhering the strands to each other has the effect that even if thread breakage occurs during strand drawing, the strands are partially glued together, making it possible to reliably pull out the broken strand. As mentioned above, this bonding between strands occurs almost periodically, and at that time, there is a large difference in the length of the individual strands that are not bonded (hereinafter referred to as split strands) during this one period. Then, when the thread is pulled out in the next process, the exit point (separation point) of the strands from the package will gradually shift between the divided strands.

If the strands become misaligned in this way, the strands will eventually no longer come out smoothly from the package, causing tangles.

If this gets caught in a yarn guide or the like, or becomes jammed, the yarn breaks, and the slack in the yarn that occurs due to the difference in length of the strands becomes a loop 14 as shown in FIG. 5, for example, in the case of manufacturing a roving 13.

In particular, the wider the width of all the strands, the greater the difference in length between the strands, which increases the number of loops that occur, and the larger the loops become.

This may cause the loops and strands to become entangled when the roving is pulled out from the roving package in the next process, or may get caught in the yarn guide midway, making it impossible to pull out the roving smoothly.

Also, since the diameter of the strand becomes thicker at the adhesive part of the strand, for example, the strand is cut to a certain length to form a chopped strand, and this is processed into a mat shape to form an FRP.
When used in manufacturing, the integrated thick strand portion and the subdivided thin strand portion differ in the degree of resin impregnation into the strand, which also affects the degree of chemical bonding between the glass and the resin. As a result, in areas where the resin cannot be bonded sufficiently, sufficient strength cannot be obtained and the uniformity of the strength of the molded product is impaired, which has a negative impact on the quality of the product. .

As a result of various studies aimed at improving the above-mentioned drawbacks, the inventor of the present invention has developed a pair of wires having a short leg portion and a long leg portion extending parallel to each other and in opposite directions at both ends of the spiral portion. In a traversing device that is fixed so that it is approximately perpendicular to the traverse shaft and one short leg is located near the other long leg, there is a traversing device with a small angle to the traverse shaft near the short leg of the spiral part. By using a traversing device in a glass fiber winding device characterized by forming a strand movement control section having an inclination, movement of the strand in the lateral direction on the wire is significantly suppressed,
By eliminating the excessive lateral movement of the strands as in the case of conventional wires, and by making the split strands not move smoothly or rather irregularly, the attachment points of the strands are randomized and the strands can be pulled out. The present invention has been proposed based on the discovery that this process can be easily carried out and excellent strands without large differences in thickness can be obtained.

The configuration of the present invention is based on the embodiment shown in FIG. 6 and below.
To explain in detail, each of the short legs of the wires 11' and 12' is raised from the traverse shaft 10 at an angle close to a right angle, and the wires 11' and 12' are made to cross the traverse shaft 10 from the ends of the short legs. A guide part A (see FIG. 7) is made, and a movement control part B is provided extending from the end of the guide part A at a small angle .beta. to the center of the spiral part of the wire, and the other parts are formed in the same manner as in the conventional method.

The distance l of the guide part A is formed to be larger than the distance m from the junction point of the short leg of the wire with the traverse shaft 10 to the surface of the shaft on the side where the spiral part of the wire is located, so that the strand 5 is Traverse shaft 10
prevent contact with

Incidentally, the angle β and the distance S are appropriately determined depending on conditions such as the number of strands to be divided, the thickness, etc., and the length of the spiral portion of the wire.

The embodiment of the present invention is constructed as described above, and since the angle β of the movement control portion B of the wires 11' and 12' is small as shown in FIG. 7, the force for moving the strands in the lateral direction is small. .

Therefore, the lateral movement of the strand is no longer smooth, and the strand that has been moved laterally by the spiral part C is suddenly braked, causing the strand to move to the spiral part of the other wire. The timing to start is delayed compared to the conventional one, and the strand that reaches the movement control unit B first is placed in a state where it is forced to wait for the strand that arrives later.

In this way, all the divided strands are transferred to the movement control section B.
, and as soon as they are lined up at a certain distance, they simultaneously transfer to the long legs of the other wire.

Therefore, among the divided strands lined up in the movement control section B,
Even if contact and bonding occur between some strands, unlike in the case of conventional wires, the entire strands will not be bonded together due to collision between them, and therefore the bonding at the transition area will not occur. The reduction in the number of split strands is significantly controlled.

As a result, there is no thick part that occurs due to the joining of many strands at the same place as in the past, and it is possible to form one strand as a whole with less space.

Therefore, when pulling out the strands, the water strands can be pulled out smoothly, and when producing chopped strands, it is possible to obtain chopped strands with no difference in thickness.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional glass fiber winding device, Fig. 2 is a side view thereof, Fig. 3 is a front view of a traversing device, Fig. 4 is an explanatory view from a different angle, and Fig. 5 is a front view of a conventional glass fiber winding device. The figure is a perspective view of a roving product, and FIG. 6 is a front view of a traversing device according to the present invention.
FIG. 7 shows explanatory diagrams viewed from different angles. In addition, 55 is a strand, 10 is a traverse shaft, 1
1' and 12' are wires, B is a movement control part, and C is a spiral part.

Claims (1)

[Claims] 1. A pair of wires with short legs and long legs extending parallel to each other and in opposite directions at both ends of the spiral part, so that both legs are approximately perpendicular to the traverse shaft, and one short leg is parallel to the other long leg. The traversing device is fixed so as to be located near the leg portion, and is characterized in that a strand movement control portion having a small angle of inclination with respect to the traverse shaft is formed near the short leg portion of the spiral portion. Traverse device in glass fiber winding device.